Whoa.. I don't understand what you're doing with these plants! Sorry!! In Wk4, you reported you were feeding these ladies every other day ... then you say in Wk5 you had a nitrogen toxicity and so you flushed... and now in Wk6 you've DOUBLED the nutrients. I cannot stress hard enough that, with autoflowers, less is more... less is better... it's better to have a deficiency than a toxicity... And you are massively overfeeding these poor plants... massively. I also get the impression, from your comment in WK4, that you were not giving them plain pH'd water inbetween feedings... this is incredibly important... and it's incredibly important that they are given a chance to dry out between waterings/feedings... and when you water, it's incredibly important that you water enough that you get at least 10-20% runoff as this helps clear the soil of built-up salts and excess nutrients...
I think what's happened is that you've so overloaded them with nutrients that they've rather gone into shock and just stopped "doing their thing." It's not the calmag that is the problem (but I don't even see that you're giving that to them)... You need to give them a chance to recover and hope they can get back on track...
Flush them out again... 33 liters of water through each pot - and make sure the water is pH'd to between 6.0 and 6.5. Then let them dry out, it will take several days. When the pots are lightweight, indicating they need something more, go ahead and give them a dose of nutes BUT cut the amount of Micro and Grow to 1ml/l of each and the Bloom to 2ml/l and skip the other two at least for this one feed. Give her a chance to "breathe" ... again, make sure your pH is in range... From there on, practice the routine of water/feed/water/feed judging when they need something by the lightness of the pot... not YOUR schedule - THEIRS. With luck, you can bring her back to giving you more buds and get her to harvest. Don't, btw, ever increase the amount of Micro to more than 1ml/l... it's heavy in nitrogen and was most likely a contributor to the toxicity you experienced since it's NPK is 4-0-0 so it's almost pure nitrogen...
Good luck.... and go gently with them... autos are terribly finicky!